Your settings should not be changing on their own. Something like electrostatic discharge can cause chips to have 'hiccups', if you will. Please try a system reset by having the Model 975 ON and holding both TUNER and MUTE on the front panel; please note, you will lose all settings as this will wipe the microprocessor back to factory default. Please email me at customerservice@outlawaudio.com with your results, so we can be of further assistance.